<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <script>
        var c = ''
        for (a = 1; a<=9; a++) {
            for (b=1; b <=a ;b++) {
            //    c = c + '0'
               c = c + b +'x'+a +'='+a*b+'\t'
            }
            c += '\n'
        }
        console.log(c);
    </script>
</body>
</html>